Hi,

I'd say the Scarlett Solo is a fine interface (Focusrite stuff tends to be rock solid), it just won't be able to record the K2000 in stereo, since it only has one line input. That's its only disadvantage.

As long as you're OK with recording the synth in mono, all you need is the MIDI interface.

If you want to be able record it in stereo, an interface with two inputs that can handle line level would be required.

For what it's worth, I do tend to record my synths in mono. I only need stereo in for my drum machine and reverb pedal.

Thanks
Kent
PG Music